Numbers 4:23-26

23Count all the males from 30 to 50 years of age, everyone coming to work in the service of the Tent of Meeting.

24This is the task of the Gershonite families in working and carrying burdens.

25They are to carry the curtains of the Tabernacle, the Tent of Meeting, its covering, the outer covering of porpoise hide, the curtains for the entrance for the Tent of Meeting,

26the curtains surrounding the courtyard and the altar, the curtain for the entrance, the ropes and all the equipment used in its operations. They are to do all that needs to be done with these things.